1 Reply Latest reply on May 26, 2014 1:28 AM by Mylenium

    Visual glitch/bug when using Alpha Mattes

    lucdelamare

      Just ran into a strange issue where a layer using an alpha matte scales itself to fit the bounds of a mask applied to the alpha matte.  Anyone ever seen this before?  When I solo the matted layer, the glitch disappears, but when not solo'd and upon RAM previewing or scrubbing the timeline, in a random pattern of on and off frames the strangely scaled layer reappears. 

       

      Attached is an example/screen grab of this glitch, where the two scaled frames (layers "rotoMask" & "rotoMask 2") are the layers being unwillingly scaled, and the matte layers are just solids with animated masks (in this example being used to roto a mask for two foreground buildings).

       

      On other thing that may or may not be a factor, the matte layers are parented to 2D nulls that are expression-connected to 3D nulls via the to.Comp method.

       

      I'm running AE 12.2.1.5, OSX 10.9.3 on a new Mac Pro.

       

      Thanks for your help!

      Screen Shot 2014-05-25 at 11.49.50 PM.png

      Screen Shot 2014-05-25 at 11.50.07 PM.png